How to Check If Bedrodium Is Actually Improving Your FPS

Before You Change Anything

Bedrodium only touches the bedrock layer, so its effect is small and situational. Before judging it, get a baseline. Stand somewhere the bedrock layer is being rendered — at the bottom of the world, or in the Nether near the roof or floor — and open the debug screen (F3). Note the frame rate and, more importantly, the entity/polygon counts shown there. Do this in a few spots: a normal overworld cave near the bottom, a Nether tunnel, and the surface.

Comparing With and Without

Now disable the mod (or test in a separate profile) and repeat the exact same positions and camera angles. The difference will be most visible where large flat expanses of bedrock are in view, because that is where the hidden faces were being culled. On strong hardware the change may be within normal frame-rate noise, which is expected — this mod targets rendering load, not gameplay.

What to Look For

If you are on a weaker machine, watch for smoother frame pacing rather than a big peak number. Also check that bedrock still looks correct: you should see solid bedrock where you would expect it, with no holes or see-through gaps when you look at it from below or above. If something looks wrong, that is a rendering conflict, not a performance result, and you should investigate your other rendering mods.